<!DOCTYPE html>
<html>
<head>
<style>
#a {
    position: absolute;
    width: 128px;
    height: 64px;
    top: 0;
    left: 0;
    background: blue;
}
#b {
    position: absolute;
    width: 128px;
    height: 128px;
    top: 0;
    left: 128px;
    background: purple;
}
</style>
</head>
<body>
<div><span id=a></span><span id=b></span></div>
</body>
</html>

